SPACI score report for 1kpk in ASTRAL 2.08:

PDB Entry: 1kpk
SPACI score: 0.08
AEROSPACI score: 0.08

Experiment type: XRAY
Resolution: 3.5
R-factor: 0.29
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.05
WCK2 WHAT_CHECK Ramachandran: -7.087
WCK3 WHAT_CHECK Chi angles: -3.256
WCK4 WHAT_CHECK Backbone: -1.081

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).